Listen to Robert Emmerich introduce The Big Apple, a hit song from 1937. Music written by Bob and performed by Tommy Dorsey's Clambake Seven with Bob on piano. Lyrics written by Buddy Bernier and sung by Edythe Wright. Audio provided by Dorothy Emmerich.

"Brooklyn Zoo” is a single from the album Return to the 36 Chambers (1995) by hip-hop artist Ol’ Dirty Bastard (1968-2004)—the Brooklyn-born Russell Tyrone Jones. There is a Prospect Park Zoo in Brooklyn, but the title refers to the craziness of the borough.

The term “Brooklyn Zoo” has been used infrequently. A book was titled Brooklyn Zoo: The Education of a Psychotherapist (2012).

Wikipedia: Brooklyn Zoo“Brooklyn Zoo” is the debut single of the American Hip-hop artist, Ol’ Dirty Bastard from the album, Return to the 36 Chambers. After the Wu-Tang Clan started releasing solo efforts, Ol’ Dirty Bastard was second behind Method Man to release a solo album with Return to the 36 Chambers. This is Ol’ Dirty Bastard’s 2nd highest charting single, behind Got Your Money.
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Released February 3, 1995

Urban DictionaryBrooklyn Zoo
Album of Ol’ Dirty Bastard a short time before his death. Also used as a term of endearment/rememberance/love towards him.
Example:
R.I.P. Dirt
Brooklyn Zoo Forever
by Alan Harris Jan 20, 2006